This image was taken from the Jagger Museum overlook In Hawai'i Volcanoes National Park, a World Heritage Area whc.unesco.org/en/list/409 Inside Halema'uma'u - the pit crater inside the caldera - is a lava lake, which is also putting out "vog" - a combination of Water vapor, Sulfur dioxide, Carbon dioxide, and ash (when the plume is browner - it's got more ash)

Trade winds drive the plume to the right, towards the school I teach at. And, the area below the plume is a "desert" - in this case, it is a "Chemical Desert" due to acid rain.